Harriet has lived a long, fulfilling life, surrounded a loving family and her friends at the Marryat Manor retirement home. But instead of enjoying her twilight years, she feels alone and afraid. The specter of dementia haunts her, and she would give anything to relieve her youth once again.
When she discovers a secret diary containing a ritual that claims to restore youth and vitality, Harriet's dreams seem to come true. The years fade from Harriet's face, and she regains her beauty and charm. Men find her irresistible, including Ralph, the handsome son of her oldest friend... a man less than half her true age.
But as Harriet relives her younger days, her loved ones begin to rapidly age and decay. The patients in her retirement home hover perilously close to death, and even Ralph finds himself succumbing to the strange effect. Desperate for the truth, Harriet researches the old diary. And slowly, she learns the terrifying truth of its owner's mysterious past.
A sinister force inhabits her restored body, a vindictive spirit from centuries ago. It feeds on the life force of others, drawing them closer to the netherworld from whence it came. And Harriet is the only one who can stop it...